Sizing or separating apparatus



w. E. BBYAN. SIZING 0R SEPARATING APPARATUS.

APPLICATION FILED SEPT- 30, I9I6.

Patented May 4, 1920.

3 SHEETS-SHEET I.

w. E. BRYAN. SlZlNG 0R SEPARATING APPARATUS. APPLICATION FILED SEPT. 30, I916.

Patented May 4,1920.

UNITED STATES, PATENT oFFIon.

WILLIAM EYBRYANT, or AKRON, OHIO.

SIZING OR SEPARATING APPARATUS.

r Specification of Letters Patent. P t t May 4, 192

Application filed September 30, 1916. Serial 'No.'123;119.

To all whom it may concern Be it knownthat I, WILLIAM E. BRYAN, a citizen of the United States, residing at .Akron, in the county of Summit and State of Ohio, have invented new and useful Improvements in Sizing or Separating Apparatus, of which the following is a specification. This invention relates to a sizing or separating apparatus for mechanically sizing or'separating granular material of different sizes or dimensions, and particularly to mechanical sizing apparatus of that class which dispenses with the use of screens and mechanically separates the particles of material of different sizes according to their size or volume.

The object of the invention is to provide a simple reliable, and efficient construction of separating apparatus which may be inexpensively made and operated, and which will rapidly separate or classify solid granu lar material of all kinds into its components of difierent sizes.

A further object of the invention is to provide a sizing or separating apparatus in which the parts are readily adjustable to vary their action-as required according to the nature of the material under treatment.

With these and other objects in view, the invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being-had to the acco1npanying drawings in which Figure 1 is a side elevation with parts broken away of an apparatus embodying my invention.

Fig. 2 is a vertical transverse section through the apparatus.

Fig. 311s a top plan view of the supporting frame or carriage.

Fig. 4 is a view of one of the decks on an enlarged scale.

Figs. 5 and on lines 5-5 and 6-6 of Fig. 4:.

Fig.7 is a view of one of the feed on an enlarged scale. 1 4

Figs. 8 and 9 are detail sections thereof on lines 8-S and 99 of Fig. 7.

Figs. 10 and 11 are perspective views of boards one of the shoes and the coacting track rail.

Figs.- 12 and 13 are detail views of one of the collectors.

6 are cross sections thereof carries track rails 7, to be engaged by sliding shoes 8, upon the'side bars of the carriage. As shown, the rails 7 are provided with V-shaped longitudinal grooves 9 receiving correspondingly shaped ribs or retaining projections 10 upon the shoes 8, whereby the shoes are held in guided connection with the rails from an'yliability of lateral displacement. The meeting faces 11 and 12 of the rails and shoes incline in opposite directions, the surfaces 11 extending at an upward and forward and the surfaces 12 ata downward and rearward angle of inclination to the horizontal, whereby in the back and forth reciprocations of the frame or carriage said'frame or carriage will move both vertically and horizontally, as will be readily understood.

In practice, any suitable means may be provided for reciprocating the carriage, the means employed being preferably of a type for moving the carnage forward at a umform rate of speed and retracting or moving itbackward suddenly with a jerk or accelerated speed. In the present instance I have shown the carriage connected at its rear end'with a rod 13, spring pressed in one direction, and having a terminal roller to be engaged by a cam member, to illustrate a conventional manner of operation.

Supported by the carriage are one or more inclined separator decks'or platforms 15, two of which are shown in the present instance, said decks or platforms being disposed at the opposite sides of the platform and having their upper edges disposed in approximate relation, the surfaces of the decks or platforms thence extending downwardly and outwardly at adiverg ng angle of inclination of a desired degree. The decks or platforms are provided at their upper ends with brackets 16, which are hingedly or pivotally connected, as shown at 17 to permit the decks to be relatively adjusted, and adjacent to their lower ends the decks carry brackets 18 which are hingedly or pivotally connected, as at 19 with adjustable supporting bars 20. These bars angle 9f inclination to the angle of inclina- 20 are arranged adjacent the opposite ends of the decks and rest upon the end bars 3 of the carrier frame, said supporting bars being provided with longitudinal slots 20 for the passage of fastening bolts 21, whereby they are mounted for sliding adjustment on the carrier frame and so as to be fixed firmly in adjusted position. The inner ends of each pair of supporting bars 20 are provided with upturned portions 22 formed with threaded openings for the passage of the oppoiste ends of a shaft 23, said ends of the shaft being right and left hand thread ed, respectively, and the central portion of said sh aft being provided with a hand wheel 2-l arranged between bearing and stop brackets 25, whereby by turning said wheel in one direction the brackets may be slid outwardly to spread the lower portions of the decks, while by turning the wheel in the oppoiste direction the brackets will be slid inwardly to draw the lower portions of the decks toward each other. By this means the hinged decks may be relatively adjusted to vary their slope or angle of inclination, as may be required or found advisable in the treatment of different materials, and it will be seen that the construction described adapts both tables to be easily and conveniently adjusted to equal degrees in unison in a practically instantaneous manner.

Each separator deck or platform is reinforced on its inner side by suitably arranged longitudinal braces 26, and is provided with an outer separating surface to effect the sizing of the material or materials under treatment. To this end, the said outer surface of the deck or platform is provided with a continuous series of spaced, parallel, longitudinal riflies 27, each consisting of a strip of rubber, wood, metal or other suitable material. These strips are of maximum width and depth at their rear ends and thence gradually and uniformly taper in width. and depth. toward their forward ends, at which they are of minimum width and depth, by which construction retaining channels of flaring width and depth are formed upon the surface of the deck for the reception of the material which is being acted upon, said channels being separated by the partitions or riflles over which the material flows in its course of travel downwardly and forwardly along the surface of the deck.

. For cooperation with the separator decks or platforms, I provide feed boards 28, said boards being mounted above the upper rear portion of the separator decks in an inclined position, the two boards, one for each deck, being disposed opposite each other and having their inner or working surfaces inclining downwardly and inwardly toward tion of said decks. The lower edges of these boards are hinged or pivoted to the upper edges of the decks, as shown at 29, and at their rear ends the boards are provided with hinged bracket arms 30 which depend therefrom and are formed with longitudinal slots 31 receiving bolts 32 upon the decks, whereby the boards are slidably connected with the decks to vary their angle of inclination, nuts 33 being provided upon the bolts for clamping the bracket arms 30 to hold the boards disposed at the desired working angle of inclination. Each board is arranged to extend at an oblique angle to the line of feed of the material, having its receiving end located outwardly and rearwardly be yond the rear end of the deck, and extending inwardly and forwardly at an angle to such portion of the deck, for the travel of the material from a supply or feed conductor 34L to the deck at a corresponding angle. For this purpose, the board is made of approximately triangular form, and at its forward portion or apex connects with a funnel shape nozzle 35 communicating with a feed pipe or trough 86, secured to the up per longitudinal edge of the deck, and through which the material is supplied to the deck, the pipe being open or perforated at the bottom for the discharge of the material. Hence it will be understood that in the forward movement of each deck and its feed board the material will be fed forward to the deck for treatment. In practice the surface of the feed board. is preferably provided with riflies 37 corresponding in form and arrangement with the rifi'les of the deck, whereby in the initial feed of thematerial to the deck a primary separating action will be set up to distribute the materialproperly to the surface of the deck for a continuation. of such separating action, by means of which the necessity for the use of decks or separating surfaces of excessively large size will be avoided.

In the operation of the separator as thus far described it willbe understood that the material will flow over the rifiied' surfaces of the feed boards to the nozzles 35, through which the coarse material and a portion of the finer material will discharge into the channels formed by the ritlies at the upper rear portions of the decks, a portion of the fines, preliminarily separated from the coarse particles by'the riflies of the feed boards, entering the pipes or troughs 36 and passing forwardly along thesame and discharging at the forward ends thereof into a suitable receptacle. In the back-and-forth movements of the separator the material supplied to the decks will be agitated and constantly fed forwardly, the coarser material flowing at once, over and down the the upper edges of the decks at a reverse riffled surfaces at the rearends ofthe decks,

while the finer material progressively moves forward through the channels of constantly increasing widths and decreasing depths formed by the tapered riflles, as a result of which the particles of material are caused to break or discharge over the rifiies at different points along the line of feed and to discharge according to their degrees of time ness, at the-bottom portions and at different points along the length of the decks, the finest materials passing the full length of the decks and discharging at the forward ends thereof. It will thus be apparent that a grading operation is obtained by means of which the granular particles will be progressively and gradually separated in ac-; cordance with their size or volume and without regard to their specific gravity, an efiicient separation action of the grains according to their grades or sizes being thereby efficiently obtained. This separating action is promoted by a relatively slow forward motion of the separator and a quick abrupt backward motion thereof, by which the material is caused to feed forward with positiveness and certainty. By the use of a track structure of the character described it will be evident that the vertical as well as the longitudinal reciprocatory motion of the separator will be secured without the use of toggle lever lifting mechanism, whereby the construction is simplified and the cost of maintenance reduced. The coarse and fine particles as they reach the lower edges of the separating tables are discharged into funnel-shape discharge nozzles or collectors 38, each carried by a bracket arm 39 extending over the table and provided on its underside with a packing strip l0, of rubber or other suitable material, notched to receive the riflles, by which the arm may fit closely against the separator deck and serve as a divider and deflector for guiding the material to the collector. The bracket arms are tacked or otherwise and sold at a comparatively low cost.

secured to the surface of the deck and may be arranged at suitable points along the same according to the character of the division and nature of the material under treatment. It will be understood, of course, that suitable final receptacles may be provided to receive the different grades of separated material and to facilitate their final collection in a separated condition.

From the foregoing description, taken in connection with the drawing, it will be seen that my invention provides a sizing or classifying separator which dispenses with the use of screens which separate the material according to the size or volume without regard to its specific gravity, and that by the described construction of the decks and riflies a superior grading action may be secured which may be regulated to suit the nature or character of the material under treatment. Furthermore, it will be seen that the construction described provides a simple type of separator which may be easily and conveniently operated and manufactured y providing each deck with a rubber surfacing and making the rifi'les of rubber an ef fective separating action may be obtained for more reliably handling certain kinds of materials which are not so readily separated upon a smooth or polished surface.

I claim In a mechanical classifier or separator, an inclined reciprocating deck having longitudinally extending tapered rifiies, a pipe eX- tending along the crest of the deck and having a funnel-shape inlet, and an inclined feed board disposed above the upper rear portion of the deck and provided with rifiies similar in character to those of the deck and arranged to discharge portions of the material upon the table and into said pipe.

In testimony whereof I affix my signature.

WILLIAM E. BRYAN. 

